|
public static CreateSqlConnection ( this db, bool &newConnectionCreated ) : |
||
| db | this | DAAB SqlDatabase 인스턴스 |
| newConnectionCreated | bool | 새로운 Connenction이 생성되었는지 여부 |
| Результат | ||
/// <summary>
/// <paramref name="sqlCommand"/> 를 이용하여, <see cref="Task{SqlDataReader}"/>를 반환받습니다.
/// 받환받은 DataReader는 꼭 Dispose() 해 주어야 Connection이 닫힙니다.
/// </summary>
/// <param name="sqlDatabase">DAAB의 SQL Server용 Database</param>
/// <param name="sqlCommand">실행할 sqlCommand 인스턴스</param>
/// <param name="parameters">Command Parameters</param>
/// <returns></returns>
public static Task <SqlDataReader> ExecuteReaderAsync(this SqlDatabase sqlDatabase,
SqlCommand sqlCommand,
params IAdoParameter[] parameters)
{
sqlCommand.ShouldNotBeNull("sqlCommand");
if (IsDebugEnabled)
{
log.Debug("ExecuteReader 를 비동기 방식으로 실행합니다... CommandText=[{0}], Parameters=[{1}]",
sqlCommand.CommandText, parameters.CollectionToString());
}
var newConnectionCreated = false;
if (sqlCommand.Connection == null)
{
sqlCommand.Connection = SqlTool.CreateSqlConnection(sqlDatabase, ref newConnectionCreated);
}
if (parameters != null)
{
AdoTool.SetParameterValues(sqlDatabase, sqlCommand, parameters);
}
var commandBehavior = newConnectionCreated ? CommandBehavior.CloseConnection : CommandBehavior.Default;
var tcs = new TaskCompletionSource <SqlDataReader>();
sqlCommand.BeginExecuteReader(iar => {
try {
tcs.TrySetResult(sqlCommand.EndExecuteReader(iar));
}
catch (Exception ex) {
tcs.TrySetException(ex);
}
},
null,
commandBehavior);
return(tcs.Task);
//! NOTE: FromAsync를 사용하지 못한 이유가 sqlCommand.BeginExecuteReader() 의 overloading이 많아서, 모호한 함수 호출 때문이다.
//var ar = sqlCommand.BeginExecuteReader(commandBehavior);
//return Task.Factory.StartNew(() => sqlCommand.EndExecuteReader(ar));
//Task<SqlDataReader>.Factory.StartNew(state => sqlCommand.EndExecuteReader((IAsyncResult)state),
// ar,
// TaskCreationOptions.None);
}
/// <summary>
/// <see cref="SqlCommand.ExecuteXmlReader"/> 를 비동기 방식으로 실행하는 <see cref="Task{XmlReader}"/> 를 빌드합니다.
/// </summary>
/// <param name="sqlDatabase">DAAB Database 인스턴스</param>
/// <param name="sqlCommand">실행할 sqlCommand 인스턴스</param>
/// <param name="disposeCommandWhenCompleted">작업 완료 후 command를 dispose할 것인가?</param>
/// <param name="parameters">Command paramters</param>
/// <returns>비동기 실행용 <see cref="Task{XmlReader}"/></returns>
public static Task <XmlReader> ExecuteXmlReaderAsync(this SqlDatabase sqlDatabase,
SqlCommand sqlCommand,
bool disposeCommandWhenCompleted,
params IAdoParameter[] parameters)
{
sqlCommand.ShouldNotBeNull("sqlCommand");
if (IsDebugEnabled)
{
log.Debug("sqlCommand.ExecuteXmlReader를 비동기 방식으로 실행합니다... CommandText=[{0}], parameters=[{1}]",
sqlCommand.CommandText, parameters.CollectionToString());
}
var newConnectionCreated = false;
if (sqlCommand.Connection == null)
{
sqlCommand.Connection = SqlTool.CreateSqlConnection(sqlDatabase, ref newConnectionCreated);
}
if (parameters != null)
{
AdoTool.SetParameterValues(sqlDatabase, sqlCommand, parameters);
}
return
(Task.Factory
.StartNew(() => sqlCommand.ExecuteXmlReader(), TaskCreationOptions.PreferFairness)
.ContinueWith(antecedent => {
if (IsDebugEnabled)
{
log.Debug("sqlCommand.ExecuteXmlReader를 비동기 방식으로 실행했습니다!!! CommandText=[{0}]",
sqlCommand.CommandText);
}
if (newConnectionCreated)
{
AdoTool.ForceCloseConnection(sqlCommand);
}
if (disposeCommandWhenCompleted)
{
With.TryAction(sqlCommand.Dispose);
}
return antecedent.Result;
},
TaskContinuationOptions.ExecuteSynchronously));
}
/// <summary>
/// <see cref="SqlCommand"/>을 ExecuteNonQuery 메소드로 비동기 실행을 하도록 하는 <see cref="Task{Int32}"/>를 빌드합니다.
/// </summary>
/// <param name="sqlDatabase">DAAB의 MS SQL Server용 Database 인스턴스</param>
/// <param name="sqlCommand">실행할 SqlComnnad 인스턴스</param>
/// <param name="parameters">파리미터 정보</param>
/// <returns>실행에 영향을 받은 행의 수를 결과로 가지는 <see cref="Task{Int32}"/></returns>
public static Task <int> ExecuteNonQueryAsync(this SqlDatabase sqlDatabase,
SqlCommand sqlCommand,
params IAdoParameter[] parameters)
{
sqlCommand.ShouldNotBeNull("sqlCommand");
if (IsDebugEnabled)
{
log.Debug("sqlCommand.ExecuteNonQuery를 비동기 방식으로 실행합니다. CommandText=[{0}], Parameters=[{1}]",
sqlCommand.CommandText, sqlCommand.Parameters.CollectionToString());
}
var newConnectionCreated = false;
if (sqlCommand.Connection == null)
{
sqlCommand.Connection = SqlTool.CreateSqlConnection(sqlDatabase, ref newConnectionCreated);
}
if (parameters != null)
{
AdoTool.SetParameterValues(sqlDatabase, sqlCommand, parameters);
}
//! NOTE: FromAsync 메소드에서는 TaskCreationOptions.None 만 가능하다.
//
return
(Task <int> .Factory
.FromAsync(sqlCommand.BeginExecuteNonQuery,
sqlCommand.EndExecuteNonQuery,
null)
.ContinueWith(task => {
if (newConnectionCreated)
{
AdoTool.ForceCloseConnection(sqlCommand);
}
return task;
},
TaskContinuationOptions.ExecuteSynchronously)
.Unwrap());
}
/// <summary>
/// <paramref name="sqlCommand"/> 를 비동기 방식으로 실행하여, Scalar 값을 반환하는 <see cref="Task{Object}"/>를 빌드합니다.
/// </summary>
/// <param name="sqlDatabase">DAAB의 SQL Server용 Database</param>
/// <param name="sqlCommand">실행할 sqlCommand 인스턴스</param>
/// <param name="parameters">Command Parameters</param>
/// <returns>결과 Scalar 값을 가지는 Task의 인스턴스</returns>
public static Task <object> ExecuteScalarAsync(this SqlDatabase sqlDatabase,
SqlCommand sqlCommand,
params IAdoParameter[] parameters)
{
sqlCommand.ShouldNotBeNull("sqlCommand");
if (IsDebugEnabled)
{
log.Debug("sqlCommand.ExecuteScalar 를 비동기 방식으로 실행합니다. CommandText=[{0}], Parameters=[{1}]",
sqlCommand.CommandText, parameters.CollectionToString());
}
var newConnectionCreated = false;
if (sqlCommand.Connection == null)
{
sqlCommand.Connection = SqlTool.CreateSqlConnection(sqlDatabase, ref newConnectionCreated);
}
if (parameters != null)
{
AdoTool.SetParameterValues(sqlDatabase, sqlCommand, parameters);
}
return
(Task.Factory
.StartNew(() => sqlCommand.ExecuteScalar())
.ContinueWith(task => {
if (newConnectionCreated)
{
AdoTool.ForceCloseConnection(sqlCommand);
}
return task;
},
TaskContinuationOptions.ExecuteSynchronously)
.Unwrap());
}